Iron Horse MTF2 Series User manual

Chapter 1: Getting Started
Page 1–1IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
Table of ConTenTs
Manual Overview � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–2
Overview of this Publication � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–2
Who Should Read This Manual � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–2
Technical Support � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–2
Special Symbols � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–2
Available Models � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–3
MTF2 Farm-Duty T-Frame Single-Phase Motors – Features and Specifications � � � � � � � � � � � � � 1–3
MTR2 Rolled-Steel 56C/56HC-Frame Single-Phase Motors – Features and Specifications � � � � � � � 1–4
MTDP Open Drip-Proof AC Three-Phase Motors – Features and Specifications� � � � � � � � � � � � � 1–6
MTR2 and MTRP Rolled-Steel 56C/56HC-Frame Three-Phase Motors – Features and Specifications � 1–8
MTCP2 Premium-Efficiency Cast-Iron Three-Phase Motors – Features and Specifications � � � � � � �1–10
Receiving and Inspection � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–23
Unpacking � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–23
IronHorse®Part Number Explanation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–23
Reshipping � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–24
Long Term Storage � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–24
Warranty � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–24
NOTE: (table)

Page 1–2 IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
Chapter 1: Getting Started
Manual Overview
Overview Of this PublicatiOn
The IronHorse®General Purpose AC Motor User Manual describes the installation, maintenance and use of
all IronHorse General Purpose Motors.
whO shOuld read this Manual
This manual contains important information for those who will install, maintain, use and/or resell any of
the IronHorse motors.
technical suPPOrt
By Telephone: [phone] (Mon.-Fri., 9:00 a.m.-6:00 p.m. E.T.)
On the Web: support.automationdirect.com
Our technical support group is glad to work with you in answering your questions. If you cannot find
the solution to your particular application, or, if for any reason you need additional technical assistance,
please call technical support at 770-844-4200. We are available weekdays from 9:00 a.m. to 6:00 p.m.
Eastern Time.
We also encourage you to visit our web site where you can find technical and non-technical information
about our products and our company. Visit us at www.automationdirect.com.
sPecial syMbOls
NOTE: When you see the “notepad” icon in the left-hand margin, the paragraph to its immediate right will be
a special note.
WARNING: WheN you see the “exclAmAtIoN mARk” IcoN IN the left-hANd mARGIN, the pARAGRAph to
Its ImmedIAte RIGht WIll be AWARNING. thIs INfoRmAtIoN could pReveNt INjuRy, loss of pRopeRty, oR
eveN deAth (IN extReme cAses).

Chapter 1: Getting Started
Page 1–3IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
available MOdels
Mtf2 cOnveyOr/farM-duty t-fraMe single-Phase MOtOrs – features and sPecificatiOns
IronHorse®single-phase farm-duty motor available ratings
are 2hp to 10hp. All models have a TEFC housing (steel
frame with iron end bells) that is fully gasketed for use in dirty
environments. Motors are NEMA H, J, K and L design.
All models include a class-10 manual-reset locked-rotor
thermal protector (motor thermal overload protection must
be provided separately).
WeRecommeNd dIscoNNectING poWeR to the motoR befoRe
ResetING the theRmAl pRotectoR. doNot Reset moRe thAN
tWIce IN successIoN. the motoR must cool to 40°c (104°f)
befoRe AthIRd Reset.
cast-irOn t-fraMe 1-Phase farM-duty MOtOr sPecificatiOns
Motor Specifications – Single-Phase Farm-Duty Motors (60Hz)
Part Number HP Base
RPM Voltage* Service Factor
NEMA
Design
NEMA
Frame Housing
F.L. Amps
@208/
230VAC
Approx
Weight
(lb)
MTF2-002-1B18-182 2
1800 208 / 230VAC
±10%
1�15 @ 230VAC
1�0 @ 208VAC L
182T
TEFC
IP55
9�3 / 8�5 67
MTF2-003-1B18 3184T 13�5 / 12�5 76
MTF2-005-1B18 522�2 / 20�2 100
MTF2-7P5-1B18-215 7.5 215T 31�5 / 28�7 134
MTF2-010-1B18 10 45�2 / 38�8 149
* Operate on 230VAC +/- 10% (1.15 @ 230VAC; 1.0 S.F. @ 208V), single-phase power only.
cast-irOn t-fraMe 1-Phase farM-duty MOtOr PerfOrMance data
Performance Data – Single-Phase Farm-Duty Motors (60Hz)
Part Number HP F.L.
RPM
Current @ 230V (Amps) Torque (lb·ft) F.L.
Efficiency
(%)
F.L.
Power
Factor
Rotor
Inertia
(lb·ft2)
230V
No Load
Full
Load
Locked
Rotor
Full
Load
Locked
Rotor
Break
down
MTF2-002-1B18-182 21764 3�0 8�5 78�6 6�01 21�8 22�1 84�0 0�92 0�27
MTF2-003-1B18 31769 4�2 12�5 89�2 8�76 24�9 24�3 84�4 0�91 0�34
MTF2-005-1B18 51769 6�3 20�2 170�7 14�7 57�2 57�3 86�4 0�92 0�49
MTF2-7P5-1B18-215 7.5 1767 8�2 28�7 238�5 21�91 82�8 82�1 86�6 0�96 0�74
MTF2-010-1B18 10 1765 11�79 38�8 365�8 29�93 119�6 122�6 87�5 0�96 0�85

Page 1–4 IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
Chapter 1: Getting Started
Mtr2 rOlled-steel 56c/56hc-fraMe single-Phase MOtOrs – features and sPecificatiOns
IronHorse®single-phase 56C/56HC-frame* motors available
ratings are 1/3 hp to 2 hp. All models have a TEFC rolled steel
frame, cast aluminum end bell and removable mounting bases.
sPecificatiOns – rOlled-steel 56c-fraMe 1-Phase MOtOr
Motor Specifications – Single-Phase 56C/56HC-Frame Motors (60Hz except as indicated)
Part Number HP Base
RPM Voltage
Service
Factor
NEMA
Design
NEMA
Frame
Housing
F.L. Amps @
115V/230V 60Hz
(110/220V 50Hz)
Approx
Weight
(lb)
@ 60Hz (50Hz)
1800 RPM
MTR2-P33-1AB18 1/3
(1/4)
1800
(1500)
115/230
(110/220)
1�15
(1)
N
56C
flange
mount
IP43
TEFC
rolled steel
frame
Cast AL end
bell
F1 conduit
box location
5�2 / 2�6
(5�4 / 2�7) 22
MTR2-P50-1AB18 1/2
(1/3)
7�2 / 3�6
(7�2 / 6�3) 25
MTR2-P75-1AB18 3/4
(1/2)
10�0 / 5�0
(9�6 / 4�8) 29
MTR2-001-1AB18 1
(3/4)
13�0 / 6�5
(12�4 / 6�2) 36
MTR2-1P5-1AB18 1-1/2
(1) L 56HC
14�5 / 7�3
(14�0 / 7�0) 37
MTR2-002-1AB18 2
(1-1/2)
19�6 / 9�8
(23�4 / 11�7) 44
3600 RPM
MTR2-P33-1AB36 1/3
(1/4)
3600
(3000)
115/230
(110/220)
1�15
(1)
N
56C
IP43
TEFC
rolled steel
frame
Cast AL end
bell
F1 conduit
box location
5�4 / 2�7
(5�4 / 2�7) 21
MTR2-P50-1AB36 1/2
(1/3)
6�5 / 3�3
(6�4 / 3�2) 23
MTR2-P75-1AB36 3/4
(1/2)
9�2 / 4�6
(9�2 / 4�6) 27
MTR2-001-1AB36 1
(3/4)
11�5 / 5�8
(10�2 / 5�1) 30
MTR2-1P5-1AB36 1-1/2
(1) L
13�0 / 6�5
(11�4 / 5�7) 31
MTR2-002-1AB36 2
(1-1/2)
17�0 / 8�5
(14�6 / 7�3) 37
Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product.
NOTE: *56HC are suitable for 56C C-face mounting or 56, 143T, or 145T frame foot mounting dimensions.

Chapter 1: Getting Started
Page 1–5IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
Mtr2 rOlled-steel 56c/56hc-fraMe single-Phase MOtOrs features and sPecificatiOns (cOntinued)
PerfOrMance data – rOlled-steel 56c-fraMe 1-Phase MOtOr
Performance Data – Single-Phase 56C/56HC-Frame Motors
(230V / 60Hz data except as indicated)
Part Number
HP F.L.
RPM
Current @ 115V/230V
(Amps) Torque (lb·ft)
F.L. Efficiency (%)
F.L. Power Factor
Rotor
Inertia
(lb·ft2)
@
60Hz (50Hz)
230V
No
Load
Full Load Locked
Rotor
Full
Load
Locked
Rotor
Break
down
1800 RPM
MTR2-P33-1AB18 1/3
(1/4)
1725
(1425)
2�05 5�2 / 2�6 33 / 16 1�01 3�54 2�57 63�0 0�58 0�048
MTR2-P50-1AB18 1/2
(1/3) 2�74 7�2 / 3�6 44 / 21 1�49 5�09 3�54 64�5 0�68 0�059
MTR2-P75-1AB18 3/4
(1/2) 3�14 10�0 / 5�0 62 / 30 2�26 7�06 5�16 67�0 0�71 0�074
MTR2-001-1AB18 1
(3/4) 4�39 13�0 / 6�5 80 / 40 3�03 9�30 8�23 70�0 0�69 0�095
MTR2-1P5-1AB18 1-1/2
(1) 5�23 14�5 / 7�3 110 / 55 4�46 8�70 10�45 77�0 0�84 0�095
MTR2-002-1AB18 2
(1-1/2) 8�07 19�6 / 9�8 152 / 76 6�06 12�17 13�81 79�0 0�82 0�121
3600 RPM
MTR2-P33-1AB36 1/3
(1/4)
3450
(2850)
2�14 5�4 / 2�7 37 / 19 0�50 2�18 1�96 59�5 0�72 0�031
MTR2-P50-1AB36 1/2
(1/3) 2�23 6�5 / 3�3 47 / 23 0�74 2�59 2�42 63�0 0�74 0�034
MTR2-P75-1AB36 3/4
(1/2) 2�82 9�2 / 4�6 66 / 33 1�12 4�62 3�44 66�5 0�78 0�041
MTR2-001-1AB36 1
(3/4) 3�04 11�5 / 5�8 82 / 41 1�50 4�48 3�83 69�5 0�80 0�047
MTR2-1P5-1AB36 1-1/2
(1) 3�90 13�0 / 6�5 109 / 55 2�21 3�22 5�08 77�0 0�94 0�047
MTR2-002-1AB36 2
(1-1/2) 4�51 17�0 / 8�5 131 / 65 3�02 4�45 6�82 79�5 0�94 0�060

Page 1–6 IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
Chapter 1: Getting Started
MtdP OPen driP-PrOOf ac three-Phase MOtOrs – features and sPecificatiOns
IronHorse®MTDP, open drip-proof motors range in size from
1hp to 50hp at 1800 rpm and 3hp, 5hp, and 7.5 hp at 3600 rpm.
Frame sizes are available from 143T to 326T. All models have a
rolled steel frame; frames sizes up to 256T have cast aluminum
end bells, while frame sizes of 284T or larger have cast iron end
bells. All frame sizes have a fixed base.
sPecificatiOns – OPen driP-PrOOf ac three-Phase MOtOr
Motor Specifications – MTDP Open Drip-Proof Three-Phase Motors (60Hz except as indicated)
Part Number HP Base
RPM Voltage
Service
Factor
NEMA
Design
NEMA
Frame
Housing
F.L. Amps @
208/230V/460V
60Hz
Approx
Weight
(lb)
@ 60Hz (50Hz)
1800 RPM
MTDP-001-3BD18 1 1800 208-
230/460
1�15
(sine),
1�0
(drive)
BB
143T
ODP
IP23ODP
2�9 / 2�6 / 1�3 33�1
3�1/2�8/1�4*
MTDP-1P5-3BD18 1 1/2 1800 208-
230/460 145T 4�6 / 4�2 / 2�1 34�2
MTDP-002-3BD18 2 1800 208-
230/460 145T 5�9 / 5�4 / 2�7 38�6
MTDP-003-3BD18 3 1800 208-
230/460 182T 7�9 / 7�6 / 3�8 68�3
8�7/7�8/3�9*
MTDP-005-3BD18 5 1800 208-
230/460 184T 13�6 / 12�4 / 6�2 91�5
13�7/12�4/6�2*
MTDP-7P5-3BD18 7 1/2 1800 208-
230/460 213T 20�7 / 18�8 / 9�4 140�2
21�7/19�6/9�8*
MTDP-010-3BD18 10 1800 208-
230/460 215T 28�3 / 25�6/12�8 156�0
MTDP-015-3BD18 15 1800 208-
230/460 254T 37�6 / 34�2 / 17�1 214�9
38�5/34�8/17�4*
MTDP-020-3BD18 20 1800 208-
230/460 256T 49�5 / 45�0 / 22�5 260�1
51�5/46�6/23�3*
MTDP-025-3BD18 25 1800 208-
230/460 284T 66�3 / 60�0 / 30�0 300�0
MTDP-030-3BD18 30 1800 208-
230/460 286T 79�4 / 71�8 / 35�9 330�0
77�6/70�2/35�1*
MTDP-040-3BD18 40 1800 208-
230/460 324T 105�6 / 95�8 / 47�9 440
MTDP-050-3BD18 50 1800 208-
230/460 326T 130�3 / 117�4 / 58�7 470
131�2/118�6/59�3*
3600 RPM
MTDP-003-3BD36 3 3600 208-
230/460 1�15
(sine),
1�0
(drive)
B
145T
ODP
IP23
7�9 / 7�2 / 3�6 39�7
8�2/7�4/3�7*
MTDP-005-3BD36 5 3600 208-
230/460 182T 12�3 / 11�8 / 5�9 64�9
MTDP-7P5-3BD36 7�5 3600 208-
230/460 184T 18�9 / 17�2 / 8�6 78�1
19�2/17�4/8�7*
*These specifications apply to motors manufactured after September 2020
Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product.

Chapter 1: Getting Started
Page 1–7IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
MtdP rOlled-steel three-Phase driP-PrOOf MOtOrs features and sPecificatiOns
PerfOrMance data (fOr MOtOrs Manufactured after sePteMber 2020)
Performance Data – MTDP Rolled Steel Three-Phase Drip-Proof Motors
(230V / 60Hz data except as indicated)
Part Number
HP F.L.
RPM Current @ 230/460V (Amps) Torque (lb·ft)
F.L. Efficiency (%)
F.L. Power Factor
Rotor
Inertia
(lb·ft2)
@
60Hz (50Hz)
230/
460V No
Load
Full Load Locked Rotor Full
Load
Locked
Rotor
Break
down
1800 RPM
MTDP-001-3BD18 11742 1�40/0�70 2�8/1�4 21�18/10�59 3�03 9�51 10�03 85�5 0�81 0�09
MTDP-1P5-3BD18 1 1/2 1747 2�44 / 1�22 4�2 / 2�1 34�52 / 17�26 4�44 15�63 16�56 88�5 0�76 0�09
MTDP-002-3BD18 21744 2�96 / 1�48 5�4 / 27 47�24 / 23�62 6�06 21�15 23�45 86�5 0�79 0�10
MTDP-003-3BD18 31753 3�74/1�87 7�8/3�9 63�64/31�82 8�80 30�36 31�68 89�5 0�8 0�36
MTDP-005-3BD18 51745 4�46 / 2�23 12�4 / 6�2 93�34/46�67 14�90 40�83 46�04 89�5 0�84 0�48
MTDP-7P5-3BD18 7 1/2 1758 10�56/5�28 19�6/9�8 118�62/59�31 22�02 78�39 81�03 91 0�78 0�95
MTDP-010-3BD18 10 1753 10�24 / 5�12 24�4 / 12�2 160�8 / 80�4 30�14 97�35 100�67 91�7 0�81 1�16
MTDP-015-3BD18 15 1774 11�4/5�7 34�8/17�4 235�6/117�8 43�6 113�36 120�30 93 0�85 2�03
MTDP-020-3BD18 20 1769 13�96/6�98 46�6/23�3 303�4/151�7 59�67 154�54 178�40 93 0�86 2�44
MTDP-025-3BD18 25 1775 24�6 / 12�3 30�0 / 15�0 380 / 190 72�30 175�69 184�37 93�6 0�83 3�25
MTDP-030-3BD18 30 1775 24�8/12�4 70�2/35�1 433/216�5 87�47 252�79 291�28 94�1 0�84 3�69
MTDP-040-3BD18 40 1778 36�8 / 18�4 95�8 / 47�9 630 / 315 118�10 419�26 457�05 94�1 0�84 7�35
MTDP-050-3BD18 50 1781 46�2/23�1 118�6/59�3 771/385�5 146�7 476�78 517�85 94�5 0�83 8�99
MTDP-003-3BD36 33441 3�02/1�51 7�4/3�7 63�26/31�63 4�5 18�09 22�28 85�5 0�86 0�07
MTDP-005-3BD36 53509 3�64 / 1�82 11�8 / 5�9 94�02 / 47�01 7�43 25�26 26�15 86�5 0�89 0�15
MTDP-7P5-3BD36 7 1/2 3499 4�86/2�43 17�36/8�68 132�26/66�13 11�02 33�17 41�99 88�5 0�89 0�20
Performance Data – MTDP Rolled Steel Three-Phase Drip-Proof Motors
(190/380V / 50Hz data)
Part Number
HP F.L.
RPM
Current @ 115V/230V
(Amps) Torque (lb·ft)
F.L. Efficiency
(%)
F.L. Power Factor
Rotor
Inertia
(lb·ft2)
@
50Hz
190/380V
No Load Full Load Locked Rotor Full Load
Locked
Rotor
Break
down
1500 RPM
MTDP-001-3BD18 11449 1�32/0�66 3�2/1�6 20�4/10�2 3�65 8�21 10�13 84�3 0�82 0�09
MTDP-1P5-3BD18 1.5 1450 2�44/1�22 4�8/2�4 32�6/16�3 5�35 15�69 16�63 85�7 0�78 0�09
MTDP-002-3BD18 21448 2�96/1�48 6�4/3�2 44�6/22�3 7�31 21�26 23�57 85�7 0�81 0�1
MTDP-003-3BD18 31437 3�7/1�85 9�4/4�7 59�8/29�9 10�8 28�87 30�11 88�7 0�84 0�36
MTDP-005-3BD18 51445 4�4/2�2 14�9/7�5 87�0/43�5 18 51�77 58�37 88�7 0�87 0�45
MTDP-7P5-3BD18 7.5 1445 8�2/4�1 23�6/11�8 112/56 26�8 72�9 117�14 90�2 0�84 0�95
MTDP-010-3BD18 10 1455 10�24/5�12 29�4/14�7 152�2/76�1 36�4 97�99 101�3 91�2 0�87 1�16
MTDP-015-3BD18 15 1455 10�0/5�0 41�8/20�9 221�8/110�9 53�3 92 113�96 92�4 0�87 2�03
MTDP-020-3BD18 20 1455 13�8/6�9 56�0/28�0 285�2/142�6 72�7 142�72 235�91 92�4 0�87 2�44
MTDP-025-3BD18 25 1455 24�6/12�3 72�0/36�0 359�6/179�8 88�3 178�81 187�64 93�2 0�84 3�25
MTDP-030-3BD18 30 1455 23�8/11�9 84�2/42�1 406�2/203�1 106�6 221�94 232�6 93�7 0�85 3�69
MTDP-040-3BD18 40 1460 36�8/18�4 115�0/57�5 596/298 142�5 421�66 459�56 93�8 0�86 7�35
MTDP-050-3BD18 50 1460 44�6/22�3 142�71�2 710�6/355�3 178�6 407�92 442�75 94�1 0�85 8�99
MTDP-003-3BD36 32850 2�82/1�41 8�8/4�4 47�0/23�5 5�44 17�71 21�83 84�1 0�89 0�07
MTDP-005-3BD36 52919 3�64/1�82 13�6/6�8 91�8/45�9 8�99 25�47 26�37 85�6 0�89 0�15
MTDP-7P5-3BD36 7.5 2870 4�6/2�3 21�0/10�5 128�2/64�1 13�37 32�52 41�11 87�7 0�9 0�2

Page 1–8 IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
Chapter 1: Getting Started
PerfOrMance data (fOr MOtOrs Manufactured PriOr tO sePteMber 2020)
Performance Data – MTDP Rolled Steel Three-Phase Drip-Proof Motors
(230V / 60Hz data except as indicated)
Part Number
HP F.L.
RPM Current @ 230/460V (Amps) Torque (lb·ft)
F.L. Efficiency (%)
F.L. Power Factor
Rotor
Inertia
(lb·ft2)
@
60Hz (50Hz)
230/
460V No
Load
Full Load Locked Rotor Full
Load
Locked
Rotor
Break
down
1800 RPM
MTDP-001-3BD18 11745 1�32 / 0�66 2�6 / 1�3 21�46 / 10�73 3�03 8�18 10�09 85�5 0�81 0�09
MTDP-1P5-3BD18 1 1/2 1747 2�44 / 1�22 4�2 / 2�1 34�52 / 17�26 4�44 15�63 16�56 88�5 0�76 0�09
MTDP-002-3BD18 21744 2�96 / 1�48 5�4 / 27 47�24 / 23�62 6�06 21�15 23�45 86�5 0�79 0�10
MTDP-003-3BD18 31759 3�38 / 1�69 7�6 / 3�8 69�90 / 34�95 8�80 32�12 37�58 89�5 0�82 0�36
MTDP-005-3BD18 51749 4�46 / 2�23 12�4 / 6�2 105�76 / 52�88 14�90 50�21 57�07 89�5 0�83 0�48
MTDP-7P5-3BD18 7 1/2 1763 9�52 / 4�76 18�8 / 9�4 141�26 / 70�63 21�98 101�11 87�04 91�0 0�81 0�95
MTDP-010-3BD18 10 1753 10�24 / 5�12 24�4 / 12�2 160�8 / 80�4 30�14 97�35 100�67 91�7 0�81 1�16
MTDP-015-3BD18 15 1776 10�2 / 5�1 34�2 / 17�1 261�8 / 130�9 43�63 101�22 128�27 93�0 0�87 2�03
MTDP-020-3BD18 20 1765 11�06 / 5�53 45�0 / 22�5 325�2 / 162�6 59�84 175�93 166�36 93�0 0�90 2�44
MTDP-025-3BD18 25 1775 24�6 / 12�3 30�0 / 15�0 380 / 190 72�30 175�69 184�37 93�6 0�83 3�25
MTDP-030-3BD18 30 1780 31�4 / 15�7 71�8 / 35�9 499�6 / 249�8 86�67 240�94 276�48 94�1 0�82 3�69
MTDP-040-3BD18 40 1778 36�8 / 18�4 95�8 / 47�9 630 / 315 118�10 419�26 457�05 94�1 0�84 7�35
MTDP-050-3BD18 50 1776 46�0 / 23�0 117�6 / 58�8 818 / 409 145�20 512�56 441�41 94�5 0�84 8�99
MTDP-003-3BD36 33439 2�82 / 1�41 7�2 / 3�6 68�62 / 34�31 4�51 17�27 18�67 85�5 0�87 0�07
MTDP-005-3BD36 53509 3�64 / 1�82 11�8 / 5�9 94�02 / 47�01 7�43 25�26 26�15 86�5 0�89 0�15
MTDP-7P5-3BD36 7 1/2 3502 4�6 / 2�3 17�2 / 8�6 135�06 / 67�53 11�06 33�73 38�38 88�5 0�90 0�20
Performance Data – MTDP Rolled Steel Three-Phase Drip-Proof Motors
(190/380V / 50Hz data)
Part Number
HP F.L.
RPM
Current @ 115V/230V
(Amps) Torque (lb·ft)
F.L. Efficiency
(%)
F.L. Power Factor
Rotor
Inertia
(lb·ft2)
@
50Hz
190/380V
No Load Full Load Locked Rotor Full Load
Locked
Rotor
Break
down
1500 RPM
MTDP-001-3BD18 11449 1�32 / 0�66 3�2 / 1�6 20�4 / 10�2 3�65 8�21 10�11 84�30 0�82 0�09
MTDP-1P5-3BD18 1.5 1450 2�44 / 1�22 4�8 / 2�4 32�6 / 16�3 5�35 15�68 16�64 85�70 0�78 0�09
MTDP-002-3BD18 21448 2�96 / 1�48 6�4 / 3�2 44�6 / 22�3 7�31 21�27 23�54 85�70 0�81 0�10
MTDP-003-3BD18 31460 3�38 / 1�69 8�6 / 4�3 66�2 / 33�1 10�6 32�25 37�74 88�70 0�84 0�36
MTDP-005-3BD18 51452 4�46 / 2�23 14�4 / 7�2 100�0 / 50�0 18�0 50�58 57�60 88�70 0�85 0�48
MTDP-7P5-3BD18 7.5 1464 8�52 / 4�76 21�6 / 10�8 133�8 / 66�9 26�5 101�50 87�45 90�50 0�83 0�95
MTDP-010-3BD18 10 1455 10�24 / 5�12 29�4 / 14�7 152�2 / 76�1 36�4 97�92 101�19 91�20 0�87 1�16
MTDP-015-3BD18 15 1475 10�2 / 5�1 39�4 / 19�7 247�5 / 123�9 52�6 101�52 128�87 92�60 0�88 2�03
MTDP-020-3BD18 20 1465 11�6 / 5�53 51�8 / 25�9 307�6 / 153�8 72�2 176�89 167�50 92�50 0�91 2�44
MTDP-025-3BD18 25 1455 24�6 / 12�3 72�0 / 36�0 359�6 / 179�8 88�3 178�37 187�20 93�20 0�84 3�25
MTDP-030-3BD18 30 1457 31�4 / 15�7 86�2 / 43�1 472�6 / 236�3 104�5 242�44 277�97 93�80 0�85 3�69
MTDP-040-3BD18 40 1460 36�8 / 18�4 115�0 / 57�5 596 / 298 142�5 421�80 458�85 93�80 0�86 7�35
MTDP-050-3BD18 50 1460 46�0 / 23�0 142�4 / 71�2 773�8 / 386�9 175�2 515�09 443�26 94�30 0�85 8�99
MTDP-003-3BD36 3 2860 2�82/1�41 8�6/4�3 67�0/33�5 5�45 17�44 18�80 84�30 0�88 0�07
MTDP-005-3BD36 5 2919 3�64/1�82 13�6/6�8 91�8/45�9 8�99 25�44 26�34 85�60 0�89 0�15
MTDP-7P5-3BD36 7.5 2913 4�6/2�3 20�0/10�0 131�8/65�9 13�37 33�96 38�64 87�60 0�91 0�20

Chapter 1: Getting Started
Page 1–9IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
Mtr2 and MtrP rOlled-steel 56c/56hc-fraMe three-Phase MOtOrs – features and
sPecificatiOns
IronHorse®rolled steel 56C/56HC-frame* three-phase motors
available ratings are from 1/3 hp to 3 hp. All models have a
TEFC frame, cast aluminum end bell and removable mounting
bases.
sPecificatiOns – rOlled-steel 56c/56hc-fraMe 3-Phase MOtOr – 1800 & 3600 rPM
Motor Specifications – MTR/MTR2 & MTRP 3-Phase 56C/56HC-Frame Motors –
1800 & 3600 rpm
Part
Number HP Base RPM Voltage
Service
Factor
NEMA
Design
NEMA Frame Housing
F.L. Amps
@
230V/460V
Approx
Weight
(lb)
1800 RPM
MTR2-P33-3BD18 1/3
1800
230/460
1�15 B
56C
flange mount
(MTRP = 56HC)
TEFC rolled
steel frame
Cast
aluminum
end bell
F1 conduit
box location
1�4 / 0�7 18
MTR2-P50-3BD18 1/2 1�9 / 0�95 19
MTR2-P75-3BD18 3/4 2�6 / 1�3 22
MTRP-001-3BD18 1
208-
230/460
3�2 / 1�6 35
MTRP-1P5-3BD18 1-1/2 4�5 / 2�3 43
MTRP-002-3BD18 2 6�0 / 3�0 49
3600 RPM
MTR2-P33-3BD36 1/3
3600
230/460
1�15 B
56C
flange mount
(MTRP = 56HC)
TEFC rolled
steel frame
Cast
aluminum
end bell
F1 conduit
box location
1�3 / 0�65 18
MTR2-P50-3BD36 1/2 1�7 / 0�85 19
MTR2-P75-3BD36 3/4 2�4 / 1�2 21
MTRP-001-3BD36 1
208-
230/460
3�0 / 1�50 23
MTRP-1P5-3BD36 1-1/2 4�0 / 2�0 31
MTRP-002-3BD36 2 5�2 / 2�6 33
MTRP-003-3BD36 3 7�4 / 3�7 39
Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product.
NOTE: *56HC are suitable for 56C C-face mounting or 56, 143T, or 145T frame foot mounting dimensions.

Page 1–10 IronHorse® General Purpose AC Motors User Manual – 10th Ed. Rev A – 01/06/2021
Chapter 1: Getting Started
Mtr2 and MtrP rOlled-steel 56c/56hc-fraMe three-Phase MOtOrs features and sPecificatiOns
(cOntinued)
PerfOrMance data – rOlled-steel 56c/56hc-fraMe 3-Phase MOtOr – 1800 rPM
Performance Data – MTR/MTR2 Three-Phase 56C/56HC-Frame Motors – 1800 rpm
(460V data except as indicated)
Part Number HP F.L.
RPM
Minimum
Speed (rpm)
Maximum
Speed (rpm)
Current @ 230V/460V
(Amps)
CT VT CHP* Safe No Load Full
Load
Locked
Rotor
MTR2-P33-3BD18 1/3
1725 431 172
2700
5400
1�10 / 0�55 1�4 / 0�7 7 / 3�5
MTR2-P50-3BD18 1/2 1�36 / 0�68 1�9 / 0�95 10 / 5
MTR2-P75-3BD18 3/4 1�60 / 0�80 2�6 / 1�3 12�2 / 6�6
MTRP-001-3BD18 11760 440 176 2700 2�2 / 1�1 3�2 / 1�6 31 / 16
MTRP-1P5-3BD18 1-1/2 1760 440 176 2700 2�8 / 1�4 4�5 / 2�3 47 / 24
MTRP-002-3BD18 21760 440 176 2700 3�6 / 1�8 6�0 / 3�0 61 / 31
Part Number HP
Torque (lb·ft) F.L.
Efficiency
(%)
F.L.
Power
Factor
Rotor
Inertia
(lb·ft2)
Full
Load
Locked
Rotor
Break
-down
MTR2-P33-3BD18 1/3
N/A
1�03 2�93 3�77
N/A
67�0 0�65 0�0329
MTR2-P50-3BD18 1/2 1�53 3�81 4�96 70�0 0�69 0�038
MTR2-P75-3BD18 3/4 2�31 5�41 7�17 73�0 0�73 0�048
MTRP-001-3BD18 13 12�35 14�51 85�0 0�69 0�107
MTRP-1P5-3BD18 1-1/2 4�4 21�68 21�76 86�5 0�72 0�135
MTRP-002-3BD18 26�03 27�3 27�46 86�5 0�74 0�158
* Maximum Constant HP rpm is for direct-coupled loads.
PerfOrMance data – rOlled-steel 56c/56hc-fraMe 3-Phase MOtOr – 3600 rPM
Performance Data – Three-Phase 56C/56HC-Frame Motors – 3600 rpm
(460V data except as indicated)
Part Number HP F.L.
RPM
Minimum Speed
(rpm)
Maximum
Speed (rpm)
Current @ 230V/460V
(Amps)
CT VT CHP* Safe No Load Full Load Locked Rotor
MTR2-P33-3BD36 1/3
3450 862 345
5400 5400
0�8 / 0�4 1�3 / 0�65 7�6 / 3�8
MTR2-P50-3BD36 1/2 1�0 / 0�5 1�7 / 0�85 10�8 / 5�4
MTR2-P75-3BD36 3/4 1�3 / 0�7 2�4 / 1�2 16 / 8
MTRP-001-3BD36 13500 875 350 1�52 / 0�76 3�00 / 1�50 22 / 11
MTRP-1P5-3BD36 1-1/2 3500 875 350 1�8 / 0�9 3�96 / 1�98 38 / 19
MTRP-002-3BD36 23500 875 350 2�28 / 1�14 5�22 / 2�61 53/27
MTRP-003-3BD36 33500 875 350 3�54 / 1�77 7�38 / 3�69 89 / 45
Part Number HP
Torque (lb·ft) F.L.
Efficiency
(%)
F.L. Power
Factor
Rotor Inertia
(lb·ft2)
Full
Load
Locked
Rotor
Break
-down
MTR2-P33-3BD36 1/3
N/A
0�50 1�14 1�99
N/A
60�0 0�75 0�0245
MTR2-P50-3BD36 1/2 0�74 1�81 2�96 67�5 0�74 0�0277
MTR2-P75-3BD36 3/4 1�14 2�95 4�25 71�5 0�78 0�031
MTRP-001-3BD36 11�51 3�98 4�93 77 0�83 0�034
MTRP-1P5-3BD36 1-1/2 2�21 7�94 9�03 84�0 0�85 0�048
MTRP-002-3BD36 23�02 12�23 12�8 85�5 0�86 0�056
MTRP-003-3BD36 34�49 19�44 20�39 86�5 0�85 0�069
* Maximum Constant HP rpm is for direct-coupled loads.